Huilin WU, Yulian LI, Ya JIN, Qiong ZHANG. A design of source spacing of the X-ray density logging tool based on numerical simulation[J]. NUCLEAR TECHNIQUES, 2022, 45(10): 100402
- NUCLEAR TECHNIQUES
- Vol. 45, Issue 10, 100402 (2022)
Fig. 1. Schematic diagram of a four-probe gamma density logging tool
Fig. 2. Diagram of basic model of X-ray density logging
Fig. 3. Diagram of X-ray tube model based on Geant4
Fig. 4. Energy spectrum of the source used in the X-ray tool of this study
Fig. 5. Relationship between De and source distance (a) Long spacing group, (b) Short spacing group
Fig. 6. Relationship between counting and source distance (a) Long spacing group, (b) Short spacing group
Fig. 7. Relationship between sensitivity K and source distance (a) Long spacing group, (b) Short spacing group
Fig. 8. The relationship between the DOI and the source distance of the short spacing group detector
Fig. 9. The max radius DOI of each detector of X-ray density tool
Fig. 10. Density measured results of X-ray density tool
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Table 1. Detector parameters of X-ray density logging tool
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Table 2. Efficiency of each detector of gamma density tool
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Table 3. Source spacing range satisfying index of detection efficiency in X-ray tool
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Table 4. The formation density sensitive of each detector of gamma density tool
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Table 5. The source spacing range satisfying index of formation density sensitive in X-ray tool
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Table 6. The DOI of the short source spacing detector in the gamma density tool
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